|Title:||The Influence of Dust on Physiological Responses of Sweet Potato (Ipomoea batatas) Leaves||Other Titles:||粉塵對甘藷葉生理反應之影響||Authors:||Ming-Hwi Yao
|Keywords:||Dust;Ipomoea batatas;Leaf temperature;Stomatal conductance;CO2 exchange rate;粉塵;甘藷;葉溫;氣孔導度;二氧化碳交換速率||Issue Date:||16-Feb-1998||Publisher:||中華農業氣象學會||Journal Volume:||5||Journal Issue:||3||Start page/Pages:||105-111||Source:||中華農業氣象||Abstract:||
An increase in quarrying, mining and road traffic activities have resulted in dust deposition onto plant vegetation. This study was conducted to evaluate the physiological responses of sweet potato leaves to dust pollution. Four kinds of soil dust (namely, clay, silt, sand and carbon-black), which were different in particle size but all with pH values around 7.0，were applied to upper surface of sweet potato leaves at various density. The results revealed that the small dust particles caused stomata closure, water loss and net photosynthetic rate decline. Even though, carbon-black and clay particles were similar diameter, physiological responses to these two types of particles were significantly different, which suggesting that other parameters other than particle size are critical for the observed difference in physiological responses. It appeared that the additional absorption of incident radiation by the carbon-black had consequently changed the photosynthetic rate.
|Appears in Collections:||農業工程組|
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